Empty

ABC and CBS ordered nine additional episodes from each series, bringing the total for "Practice" and "Big Bang" to 22 episodes.

Additionally, CBS handed out a back-nine order to military drama "The Unit," which returned for a third season this fall with a 13-episode pickup.

The ABC Studios-produced "Private Practice," a spinoff of ABC's hit medical drama "Grey's Anatomy," has emerged as the highest-rated new series this season among adults 18-49. "Practice," which chronicles Dr. Addison Montgomery's (Kate Walsh) new life in Los Angeles, has averaged 13.4 million viewers and a 5.1 rating/13 share among adults 18-49. The series, created and executive produced by Shonda Rhimes, has ranked as the top program on Wednesday night in the adults 18-49 demographic for the past four weeks.

Meanwhile, Warner Bros. TV's "Big Bang," from "Two and a Half Men" co-creator Chuck Lorre and Bill Prady, has been a solid new addition to CBS' Monday night comedy block. The multicamera sitcom, starring Johnny Galecki, Jim Parsons and Kaley Cuoco, has averaged 9 million viewers and a 3.6/9 in adults 18-49 in its Monday 8:30 p.m. slot. It has built onto its "How I Met Your Mother" lead-in by 9% in adults 18-49 and 10% in viewers.

"Private Practice" and "Big Bang" join the CW's freshman drama "Gossip Girl," which received a full-season pickup last week.

"Unit," from 20th Century Fox TV, David Mamet and Shawn Ryan, has averaged 11.4 million viewers and a 3.1/8 in 18-49 in the tough 9 p.m. Tuesday slot.